266217505116 has 48 divisors (see below), whose sum is σ = 631783536384. Its totient is φ = 87236125056.

The previous prime is 266217505061. The next prime is 266217505163. The reversal of 266217505116 is 611505712662.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616750 + ... + 955413.

It is an arithmetic number, because the mean of its divisors is an integer number (13162157008).

Almost surely, 2^266217505116 is an apocalyptic number.

It is an amenable number.

266217505116 is an abundant number, since it is smaller than the sum of its proper divisors (365566031268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266217505116 is a wasteful number, since it uses less digits than its factorization.

266217505116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572410 (or 1572408 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 266217505116 in words is "two hundred sixty-six billion, two hundred seventeen million, five hundred five thousand, one hundred sixteen".